Early prediction of macrocrack location in concrete, rocks and other granular composite materials
Antoinette Tordesillas, Sanath Kahagalage, Charl Ras, Michal Nitka, Jacek Tejchman
SCIENTIFIC REPORTS | NATURE RESEARCH | Published : 2020
Heterogeneous quasibrittle composites like concrete, ceramics and rocks comprise grains held together by bonds. The question on whether or not the path of the crack that leads to failure can be predicted from known microstructural features, viz. bond connectivity, size, fracture surface energy and strength, remains open. Many fracture criteria exist. The most widely used are based on a postulated stress and/or energy extremal. Since force and energy share common transmission paths, their flow bottleneck may be the precursory failure mechanism to reconcile these optimality criteria in one unified framework. We explore this in the framework of network flow theory, using microstructural data fr..View full abstract
Awarded by US DoD High Performance Computing Modernization Program (HPCMP)
Awarded by project "Effect of meso-structure of concrete on a crack formation and propagation - experiments and two-scale numerical model" by the National Science Centre
AT, SK and CR acknowledge support from the U.S. Army International Technology Center Pacific (ITC-PAC) and US DoD High Performance Computing Modernization Program (HPCMP) under Contract No. FA5209-18-C-0002. MN and JT acknowledge support of project "Effect of meso-structure of concrete on a crack formation and propagation - experiments and two-scale numerical model" by the National Science Centre UMO-2017/25/B/ST8/02108.